Assessment of Hydrochemistry, Facies Type and Processes Contributing the Major Ions to the Groundwater of Ajakanga Area, Ibadan, South Western Nigeria

Resulting from insufficient supply of potable water and risk of possible contamination from anthropogenic sources, 14 samples were collected from wells at Ajakanga and environs in Ibadan, Southwestern Nigeria, in order to determine the shallow groundwater quality and desirability for drinking purposes. Physical parameters such as pH, EC, and TDS were measured at site using a combined EC, TDS and pH meter. Major ions analyzed included Na + , Ca 2+ , Mg 2+ , K + , NO 3 -, Cl -, HCO 3 -and SO 4 2-. The anions were measured using titrimetric method, and analyzed by Genesys 2.0 Spectrophotometer, while the cations were analyzed using the flame photometry method. The hydrochemical data were subjected to a series of statistical analysis and conventional graphical plots.